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authorDenis Vlasenko2008-06-20 20:20:54 +0000
committerDenis Vlasenko2008-06-20 20:20:54 +0000
commitb175946ba4426c4bb529f9b98f75105e21208c83 (patch)
treeab1c3187de9928a868396fc6973f9e1b55d57f17
parentb67004b2ae9ff6d5b31e3907465e35b8a7596dbe (diff)
downloadbusybox-b175946ba4426c4bb529f9b98f75105e21208c83.zip
busybox-b175946ba4426c4bb529f9b98f75105e21208c83.tar.gz
vi: fix the bug where vi never grows the edit buffer.
vi: do G trick on it function old new delta place_cursor 264 276 +12 next_tabstop 22 34 +12 mycmp 44 52 +8 status_line 34 40 +6 yank_delete 89 92 +3 what_reg 34 37 +3 suspend_sig 63 66 +3 find_range 493 496 +3 redraw 104 106 +2 cont_sig 63 65 +2 Indicate_Error 59 61 +2 status_line_bold 71 72 +1 file_insert 327 328 +1 vi_setops 1 - -1 ... cmdcnt 4 - -4 chars_to_parse 4 - -4 ccol 4 - -4 dot_scroll 88 79 -9 stupid_insert 28 18 -10 winch_sig 102 91 -11 char_insert 353 336 -17 readit 354 336 -18 get_one_char 128 110 -18 init_text_buffer 171 152 -19 text_hole_delete 132 112 -20 edit_file 940 918 -22 get_input_line 198 168 -30 show_status_line 449 408 -41 colon 3112 3067 -45 vi_main 312 250 -62 refresh 1077 974 -103 do_cmd 4818 4483 -335 ------------------------------------------------------------------------------ (add/remove: 0/38 grow/shrink: 13/20 up/down: 58/-889) Total: -831 bytes text data bss dec hex filename 809566 612 7044 817222 c7846 busybox_old 808794 611 6924 816329 c74c9 busybox_unstripped text data bss dec hex filename 18888 1 122 19011 4a43 busybox.t8/editors/vi.o 18116 0 0 18116 46c4 busybox.t9/editors/vi.o
-rw-r--r--editors/vi.c275
1 files changed, 154 insertions, 121 deletions
diff --git a/editors/vi.c b/editors/vi.c
index 1770d98..17ce88b 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -112,11 +112,19 @@ enum {
S_END_ALNUM = 5, // used in skip_thing() for moving "dot"
};
+
/* vi.c expects chars to be unsigned. */
/* busybox build system provides that, but it's better */
/* to audit and fix the source */
-static smallint vi_setops;
+struct globals {
+ /* many references - keep near the top of globals */
+ char *text, *end; // pointers to the user data in memory
+ char *dot; // where all the action takes place
+ int text_size; // size of the allocated buffer
+
+ /* the rest */
+ smallint vi_setops;
#define VI_AUTOINDENT 1
#define VI_SHOWMATCH 2
#define VI_IGNORECASE 4
@@ -127,83 +135,76 @@ static smallint vi_setops;
/* indicate error with beep or flash */
#define err_method (vi_setops & VI_ERR_METHOD)
-
-static smallint editing; // >0 while we are editing a file
- // [code audit says "can be 0 or 1 only"]
-static smallint cmd_mode; // 0=command 1=insert 2=replace
-static smallint file_modified; // buffer contents changed
-static smallint last_file_modified = -1;
-static int fn_start; // index of first cmd line file name
-static int save_argc; // how many file names on cmd line
-static int cmdcnt; // repetition count
-static unsigned rows, columns; // the terminal screen is this size
-static int crow, ccol; // cursor is on Crow x Ccol
-static int offset; // chars scrolled off the screen to the left
-static char *status_buffer; // mesages to the user
-#define STATUS_BUFFER_LEN 200
-static int have_status_msg; // is default edit status needed?
- // [don't make smallint!]
-static int last_status_cksum; // hash of current status line
-static char *current_filename; // current file name
-//static char *text, *end; // pointers to the user data in memory
-static char *screen; // pointer to the virtual screen buffer
-static int screensize; // and its size
-static char *screenbegin; // index into text[], of top line on the screen
-//static char *dot; // where all the action takes place
-static int tabstop;
-static char erase_char; // the users erase character
-static char last_input_char; // last char read from user
-static char last_forward_char; // last char searched for with 'f'
-
#if ENABLE_FEATURE_VI_READONLY
-//static smallint vi_readonly, readonly;
-static smallint readonly_mode = 0;
+ smallint readonly_mode;
#define SET_READONLY_FILE(flags) ((flags) |= 0x01)
#define SET_READONLY_MODE(flags) ((flags) |= 0x02)
#define UNSET_READONLY_FILE(flags) ((flags) &= 0xfe)
#else
-#define readonly_mode 0
-#define SET_READONLY_FILE(flags)
-#define SET_READONLY_MODE(flags)
-#define UNSET_READONLY_FILE(flags)
-#endif
+#define SET_READONLY_FILE(flags) ((void)0)
+#define SET_READONLY_MODE(flags) ((void)0)
+#define UNSET_READONLY_FILE(flags) ((void)0)
+#endif
+
+ smallint editing; // >0 while we are editing a file
+ // [code audit says "can be 0 or 1 only"]
+ smallint cmd_mode; // 0=command 1=insert 2=replace
+ int file_modified; // buffer contents changed (counter, not flag!)
+ int last_file_modified; // = -1;
+ int fn_start; // index of first cmd line file name
+ int save_argc; // how many file names on cmd line
+ int cmdcnt; // repetition count
+ unsigned rows, columns; // the terminal screen is this size
+ int crow, ccol; // cursor is on Crow x Ccol
+ int offset; // chars scrolled off the screen to the left
+ int have_status_msg; // is default edit status needed?
+ // [don't make smallint!]
+ int last_status_cksum; // hash of current status line
+ char *current_filename;
+ char *screenbegin; // index into text[], of top line on the screen
+ char *screen; // pointer to the virtual screen buffer
+ int screensize; // and its size
+ int tabstop;
+ char erase_char; // the users erase character
+ char last_input_char; // last char read from user
+ char last_forward_char; // last char searched for with 'f'
#if ENABLE_FEATURE_VI_DOT_CMD
-static smallint adding2q; // are we currently adding user input to q
-static char *last_modifying_cmd; // [MAX_INPUT_LEN] last modifying cmd for "."
-static smallint lmc_len; // length of last_modifying_cmd
-static char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
+ smallint adding2q; // are we currently adding user input to q
+ int lmc_len; // length of last_modifying_cmd
+ char *ioq, *ioq_start; // pointer to string for get_one_char to "read"
#endif
#if ENABLE_FEATURE_VI_OPTIMIZE_CURSOR
-static int last_row; // where the cursor was last moved to
+ int last_row; // where the cursor was last moved to
#endif
#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
-static int my_pid;
+ int my_pid;
#endif
#if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
-static char *modifying_cmds; // cmds that modify text[]
+ char *modifying_cmds; // cmds that modify text[]
#endif
#if ENABLE_FEATURE_VI_SEARCH
-static char *last_search_pattern; // last pattern from a '/' or '?' search
+ char *last_search_pattern; // last pattern from a '/' or '?' search
+#endif
+ int chars_to_parse;
+ /* former statics */
+#if ENABLE_FEATURE_VI_YANKMARK
+ char *edit_file__cur_line;
#endif
+ int refresh__old_offset;
+ int format_edit_status__tot;
-/* Moving biggest data to malloced space... */
-struct globals {
- /* many references - keep near the top of globals */
- char *text, *end; // pointers to the user data in memory
- char *dot; // where all the action takes place
- int text_size; // size of the allocated buffer
+ /* a few references only */
#if ENABLE_FEATURE_VI_YANKMARK
int YDreg, Ureg; // default delete register and orig line for "U"
char *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
char *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
char *context_start, *context_end;
#endif
- /* a few references only */
#if ENABLE_FEATURE_VI_USE_SIGNALS
- sigjmp_buf restart; // catch_sig()
+ sigjmp_buf restart; // catch_sig()
#endif
- struct termios term_orig, term_vi; // remember what the cooked mode was
+ struct termios term_orig, term_vi; // remember what the cooked mode was
#if ENABLE_FEATURE_VI_COLON
char *initial_cmds[3]; // currently 2 entries, NULL terminated
#endif
@@ -214,6 +215,12 @@ struct globals {
#else
char readbuffer[32];
#endif
+#define STATUS_BUFFER_LEN 200
+ char status_buffer[STATUS_BUFFER_LEN]; // messages to the user
+#if ENABLE_FEATURE_VI_DOT_CMD
+ char last_modifying_cmd[MAX_INPUT_LEN]; // last modifying cmd for "."
+#endif
+ char get_input_line__buf[MAX_INPUT_LEN]; /* former static */
char scr_out_buf[MAX_SCR_COLS + MAX_TABSTOP * 2];
};
@@ -223,6 +230,50 @@ struct globals {
#define end (G.end )
#define dot (G.dot )
#define reg (G.reg )
+
+#define vi_setops (G.vi_setops )
+#define editing (G.editing )
+#define cmd_mode (G.cmd_mode )
+#define file_modified (G.file_modified )
+#define last_file_modified (G.last_file_modified )
+#define fn_start (G.fn_start )
+#define save_argc (G.save_argc )
+#define cmdcnt (G.cmdcnt )
+#define rows (G.rows )
+#define columns (G.columns )
+#define crow (G.crow )
+#define ccol (G.ccol )
+#define offset (G.offset )
+#define status_buffer (G.status_buffer )
+#define have_status_msg (G.have_status_msg )
+#define last_status_cksum (G.last_status_cksum )
+#define current_filename (G.current_filename )
+#define screen (G.screen )
+#define screensize (G.screensize )
+#define screenbegin (G.screenbegin )
+#define tabstop (G.tabstop )
+#define erase_char (G.erase_char )
+#define last_input_char (G.last_input_char )
+#define last_forward_char (G.last_forward_char )
+#if ENABLE_FEATURE_VI_READONLY
+#define readonly_mode (G.readonly_mode )
+#else
+#define readonly_mode 0 readonly_mode )
+#endif
+#define adding2q (G.adding2q )
+#define lmc_len (G.lmc_len )
+#define ioq (G.ioq )
+#define ioq_start (G.ioq_start )
+#define last_row (G.last_row )
+#define my_pid (G.my_pid )
+#define modifying_cmds (G.modifying_cmds )
+#define last_search_pattern (G.last_search_pattern)
+#define chars_to_parse (G.chars_to_parse )
+
+#define edit_file__cur_line (G.edit_file__cur_line)
+#define refresh__old_offset (G.refresh__old_offset)
+#define format_edit_status__tot (G.format_edit_status__tot)
+
#define YDreg (G.YDreg )
#define Ureg (G.Ureg )
#define mark (G.mark )
@@ -234,10 +285,15 @@ struct globals {
#define initial_cmds (G.initial_cmds )
#define readbuffer (G.readbuffer )
#define scr_out_buf (G.scr_out_buf )
+#define last_modifying_cmd (G.last_modifying_cmd )
+#define get_input_line__buf (G.get_input_line__buf)
+
#define INIT_G() do { \
SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+ last_file_modified = -1; \
} while (0)
+
static int init_text_buffer(char *); // init from file or create new
static void edit_file(char *); // edit one file
static void do_cmd(char); // execute a command
@@ -355,22 +411,15 @@ int vi_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int vi_main(int argc, char **argv)
{
int c;
- RESERVE_CONFIG_BUFFER(STATUS_BUFFER, STATUS_BUFFER_LEN);
+
+ INIT_G();
#if ENABLE_FEATURE_VI_USE_SIGNALS || ENABLE_FEATURE_VI_CRASHME
my_pid = getpid();
#endif
-
- INIT_G();
-
#if ENABLE_FEATURE_VI_CRASHME
srand((long) my_pid);
#endif
-
- status_buffer = STATUS_BUFFER;
- last_status_cksum = 0;
- text = NULL;
-
#ifdef NO_SUCH_APPLET_YET
/* If we aren't "vi", we are "view" */
if (ENABLE_FEATURE_VI_READONLY && applet_name[2]) {
@@ -379,9 +428,6 @@ int vi_main(int argc, char **argv)
#endif
vi_setops = VI_AUTOINDENT | VI_SHOWMATCH | VI_IGNORECASE;
-#if ENABLE_FEATURE_VI_YANKMARK
- memset(reg, 0, sizeof(reg)); // init the yank regs
-#endif
#if ENABLE_FEATURE_VI_DOT_CMD || ENABLE_FEATURE_VI_YANKMARK
modifying_cmds = (char *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
#endif
@@ -417,7 +463,6 @@ int vi_main(int argc, char **argv)
case 'H':
show_help();
/* fall through */
-
default:
bb_show_usage();
return 1;
@@ -451,9 +496,7 @@ static int init_text_buffer(char *fn)
/* allocate/reallocate text buffer */
free(text);
- text_size = size * 2;
- if (text_size < 10240)
- text_size = 10240; // have a minimum size for new files
+ text_size = size + 10240;
screenbegin = dot = end = text = xzalloc(text_size);
if (fn != current_filename) {
@@ -479,15 +522,14 @@ static int init_text_buffer(char *fn)
static void edit_file(char *fn)
{
+#if ENABLE_FEATURE_VI_YANKMARK
+#define cur_line edit_file__cur_line
+#endif
char c;
int size;
-
#if ENABLE_FEATURE_VI_USE_SIGNALS
int sig;
#endif
-#if ENABLE_FEATURE_VI_YANKMARK
- static char *cur_line;
-#endif
editing = 1; // 0 = exit, 1 = one file, 2 = multiple files
rawmode();
@@ -606,6 +648,7 @@ static void edit_file(char *fn)
place_cursor(rows, 0, FALSE); // go to bottom of screen
clear_to_eol(); // Erase to end of line
cookmode();
+#undef cur_line
}
//----- The Colon commands -------------------------------------
@@ -1611,7 +1654,7 @@ static char *char_insert(char * p, char c) // insert the char c at 'p'
c = get_one_char();
*p = c;
p++;
- file_modified++; // has the file been modified
+ file_modified++;
} else if (c == 27) { // Is this an ESC?
cmd_mode = 0;
cmdcnt = 0;
@@ -1654,12 +1697,9 @@ static char *char_insert(char * p, char c) // insert the char c at 'p'
static char *stupid_insert(char * p, char c) // stupidly insert the char c at 'p'
{
p = text_hole_make(p, 1);
- if (p != 0) {
- *p = c;
- file_modified++; // has the file been modified
- p++;
- }
- return p;
+ *p = c;
+ //file_modified++; - done by text_hole_make()
+ return p + 1;
}
static int find_range(char ** start, char ** stop, char c)
@@ -1842,24 +1882,21 @@ static void showmatching(char *p)
// open a hole in text[]
static char *text_hole_make(char * p, int size) // at "p", make a 'size' byte hole
{
- char *src, *dest;
- int cnt;
-
if (size <= 0)
- goto thm0;
- src = p;
- dest = p + size;
- cnt = end - src; // the rest of buffer
- if ( ((end + size) >= (text + text_size)) // TODO: realloc here
- || memmove(dest, src, cnt) != dest) {
- status_line_bold("can't create room for new characters");
- p = NULL;
- goto thm0;
+ return p;
+ end += size; // adjust the new END
+ if (end >= (text + text_size)) {
+ char *new_text;
+ text_size += end - (text + text_size) + 10240;
+ new_text = xrealloc(text, text_size);
+ screenbegin = new_text + (screenbegin - text);
+ dot = new_text + (dot - text);
+ end = new_text + (end - text);
+ p = new_text + (p - text);
+ text = new_text;
}
memset(p, ' ', size); // clear new hole
- end += size; // adjust the new END
- file_modified++; // has the file been modified
- thm0:
+ file_modified++;
return p;
}
@@ -1885,16 +1922,14 @@ static char *text_hole_delete(char * p, char * q) // delete "p" through "q", inc
goto thd0;
if (src >= end)
goto thd_atend; // just delete the end of the buffer
- if (memmove(dest, src, cnt) != dest) {
- status_line_bold("can't delete the character");
- }
+ memmove(dest, src, cnt);
thd_atend:
end = end - hole_size; // adjust the new END
if (dest >= end)
dest = end - 1; // make sure dest in below end-1
if (end <= text)
dest = end = text; // keep pointers valid
- file_modified++; // has the file been modified
+ file_modified++;
thd0:
return dest;
}
@@ -1973,8 +2008,6 @@ static void show_help(void)
static void start_new_cmd_q(char c)
{
// get buffer for new cmd
- if (!last_modifying_cmd)
- last_modifying_cmd = xzalloc(MAX_INPUT_LEN);
// if there is a current cmd count put it in the buffer first
if (cmdcnt > 0)
lmc_len = sprintf(last_modifying_cmd, "%d%c", cmdcnt, c);
@@ -2164,8 +2197,6 @@ static int mysleep(int hund) // sleep for 'h' 1/100 seconds
return safe_poll(pfd, 1, hund*10) > 0;
}
-static int chars_to_parse;
-
//----- IO Routines --------------------------------------------
static char readit(void) // read (maybe cursor) key from stdin
{
@@ -2300,13 +2331,11 @@ static char get_one_char(void)
} else {
// adding STDIN chars to q
c = readit(); // get the users input
- if (last_modifying_cmd != NULL) {
- if (lmc_len >= MAX_INPUT_LEN - 1) {
- status_line_bold("last_modifying_cmd overrun");
- } else {
- // add new char to q
- last_modifying_cmd[lmc_len++] = c;
- }
+ if (lmc_len >= MAX_INPUT_LEN - 1) {
+ status_line_bold("last_modifying_cmd overrun");
+ } else {
+ // add new char to q
+ last_modifying_cmd[lmc_len++] = c;
}
}
#else
@@ -2318,13 +2347,12 @@ static char get_one_char(void)
// Get input line (uses "status line" area)
static char *get_input_line(const char *prompt)
{
- static char *buf; // [MAX_INPUT_LEN]
+ // char [MAX_INPUT_LEN]
+#define buf get_input_line__buf
char c;
int i;
- if (!buf) buf = xmalloc(MAX_INPUT_LEN);
-
strcpy(buf, prompt);
last_status_cksum = 0; // force status update
place_cursor(rows - 1, 0, FALSE); // go to Status line, bottom of screen
@@ -2350,6 +2378,7 @@ static char *get_input_line(const char *prompt)
}
refresh(FALSE);
return buf;
+#undef buf
}
static int file_size(const char *fn) // what is the byte size of "fn"
@@ -2451,7 +2480,7 @@ static int file_write(char * fn, char * first, char * last)
ftruncate(fd, charcnt);
if (charcnt == cnt) {
// good write
- //file_modified = FALSE; // the file has not been modified
+ //file_modified = FALSE;
} else {
charcnt = 0;
}
@@ -2701,8 +2730,10 @@ static void not_implemented(const char *s)
// show file status on status line
static int format_edit_status(void)
{
- static int tot;
static const char cmd_mode_indicator[] ALIGN1 = "-IR-";
+
+#define tot format_edit_status__tot
+
int cur, percent, ret, trunc_at;
// file_modified is now a counter rather than a flag. this
@@ -2753,13 +2784,14 @@ static int format_edit_status(void)
return ret; /* it all fit */
return trunc_at; /* had to truncate */
+#undef tot
}
//----- Force refresh of all Lines -----------------------------
static void redraw(int full_screen)
{
place_cursor(0, 0, FALSE); // put cursor in correct place
- clear_to_eos(); // tel terminal to erase display
+ clear_to_eos(); // tell terminal to erase display
screen_erase(); // erase the internal screen buffer
last_status_cksum = 0; // force status update
refresh(full_screen); // this will redraw the entire display
@@ -2831,7 +2863,7 @@ static char* format_line(char *src /*, int li*/)
//
static void refresh(int full_screen)
{
- static int old_offset;
+#define old_offset refresh__old_offset
int li, changed;
char *tp, *sp; // pointer into text[] and screen[]
@@ -2919,6 +2951,7 @@ static void refresh(int full_screen)
place_cursor(crow, ccol, TRUE);
old_offset = offset;
+#undef old_offset
}
//---------------------------------------------------------------------
@@ -3276,7 +3309,7 @@ static void do_cmd(char c)
case '.': // .- repeat the last modifying command
// Stuff the last_modifying_cmd back into stdin
// and let it be re-executed.
- if (last_modifying_cmd != NULL && lmc_len > 0) {
+ if (lmc_len > 0) {
last_modifying_cmd[lmc_len] = 0;
ioq = ioq_start = xstrdup(last_modifying_cmd);
}
@@ -3750,7 +3783,7 @@ static void do_cmd(char c)
c1 = get_one_char(); // get the replacement char
if (*dot != '\n') {
*dot = c1;
- file_modified++; // has the file been modified
+ file_modified++;
}
end_cmd_q(); // stop adding to q
break;
@@ -3795,10 +3828,10 @@ static void do_cmd(char c)
} // repeat cnt
if (islower(*dot)) {
*dot = toupper(*dot);
- file_modified++; // has the file been modified
+ file_modified++;
} else if (isupper(*dot)) {
*dot = tolower(*dot);
- file_modified++; // has the file been modified
+ file_modified++;
}
dot_right();
end_cmd_q(); // stop adding to q